“…First, there is a remarkably good data base -a wealth and variety of sources collected by assiduous German officials over comparatively long periods of time. Perhaps the most enviable are the so-called Of-tssippenbiicher, reconstituted parish records or genealogical tables assembled usually for genealogical purposes but offering data for systematic demographic or social analysis (see, as examples, the discussions in Imhof, 1977b;Knodel and Shorter, 1976;and Soliday, 1977). Second, there is the ability of newcomers to built on and refine the research strategies of their predecessors.…”